6A, 0.05% Current Accuracy Power Solution for Battery Test Systems Reference Design


Design files


This reference design circuit introduces a highly accurate, bi-directional current power solution used in battery test systems (BTS). The maximum current capability is 6A with lower than 0.05% full scale accuracy. Controlling through a logic pin, the circuit can be used to charge or discharge a battery. During charging, the battery voltage can also be controlled through an analog signal. With fully integrated buck and boost converters, the circuitry is simple and easy to design. An evaluation board was built to validate the performance of this solution.

  • 6A bidirection current
  • Lower than 0.05% FS current accuracy
  • Programmable current and voltage control
  • Fully integrated converter minimizes the solution size
Output voltage options PMP15043.1
Vin (Min) (V) 12
Vin (Max) (V) 15
Vout (Nom) (V) 4
Iout (Max) (A) 6
Output Power (W) 24
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Boost- Synchronous
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUE25A.PDF (1029 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more


Detailed schematic diagram for design layout and components


Complete listing of design components, reference designators, and manufacturers/part numbers


Detailed overview of design layout for component placement


Files used for 3D models or 2D drawings of IC components


Design file that contains information on physical board layer of design PCB


PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Analog switches & muxes

SN74LV4053A5-V, 2:1 (SPDT), 3-channel analog switch

Data sheet: PDF
Boost converters (integrated switch)

TPS6117820-V, 10-A fully integrated sync boost with load disconnect

Data sheet: PDF | HTML
Buck converters (integrated switch)

TPS548214.5-V to 17-V, 8-A synchronous buck converter with hiccup current limit

Data sheet: PDF | HTML
Charge pumps (inductorless)

LM26641.8-V to 5.5-VIN switched capacitor voltage inverter

Data sheet: PDF | HTML
Instrumentation amplifiers

INA18836-V, Zero-Drift, Rail-to-Rail-Out Instrumentation Amplifier

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

LM317L100-mA, 35-V, adjustable linear voltage regulator

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

UA78L100-mA 30-V linear voltage regulator

Data sheet: PDF | HTML
Precision op amps (Vos<1mV)

OP07CLow-offset voltage (0.25 mV) single operational amplifier

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report PMP15043 Test Results (Rev. A) Apr. 02, 2018
Technical article Achieving highly accurate full-scale charge and discharge current control for high-cell Li-ion battery-formation testing Aug. 13, 2018

Related design resources

Reference designs

PMP15038 50A, 0.05% Current Accuracy Power Reference Design for Battery Test Systems TIDA-010086 Digital control cost-optimized 10-A battery formation and test reference design TIDA-01040 Battery Tester Reference Design for High Current Applications TIDA-01042 Modular battery tester reference design for 50-A, 100-A, and 200-A applications

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